Display panel or portion thereof with graphical user interface



FIG. 1 is a front view of a display panel or portion thereof with graphical user interface;

FIG. 2 is a front view of a second embodiment thereof;

FIG. 3 is a front view of a third embodiment thereof; and,

FIG. 4 is a front view of a fourth embodiment thereof.

The outermost broken lines illustrate an electronic device, which is the environment of the design. The inner broken line rectangle illustrates the display panel. The innermost remaining broken lines illustrate portions of the graphical user interface. None of the broken lines form part of the claimed design. 

CLAIM The ornamental design for a display panel or portion thereof with graphical user interface, as shown and described. 